IMPROVEMENT OF THE METHODOLOGY FOR OBTAINING BASELINE DATA TO RATIONALISE THE EFFECTIVENESS OF SHIELDING PHYSICAL FIELDS

The shortcomings of the current regulatory framework for obtaining initial data for the design of materials and structures for shielding electromagnetic and acoustic fields are identified. It is shown that in order to obtain reliable data by the method of field measurements, it is necessary to be guided by the maximum basic error of the equipment. The calculations of the total electromagnetic field differ in the two existing acts on electromagnetic safety. They give different results, which complicates design work and forces the use of over-efficiency protection. It is necessary to harmonise national and international standards for determining the electromagnetic load on people. Currently, Ukraine lacks a metrological and methodological framework for determining the specific absorbed energy and specific absorbed power of an electromagnetic field. Only resonant structures are effective for protection against low-frequency sound and infrasound. To obtain information about the frequencies of maximum amplitudes that are selected as resonant, it is necessary to measure the previous vibration spectrum. But this is not provided for by the current standards.